html,
body {
  margin: 0;
  padding: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  box-sizing: border-box;
}
#app {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 375px;
  overflow: hidden;
  box-sizing: border-box;
}
form {
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.name {
  margin: 0 10px 10px;
  border: 1px solid gray;
  outline: none;
  line-height: 32px;
  padding: 0 4px;
  &:hover,
  &:visited,
  &:focus {
    border-color: blue;
  }
}
textarea {
  flex: 1;
  margin: 0 10px;
  padding: 4px;
  height: 100%;
  box-sizing: border-box;
  resize: none;
  border: 1px solid gray;
  outline: none;
  &:hover,
  &:visited,
  &:focus {
    border-color: blue;
  }
}
button {
  display: flex;
  justify-content: center;
  margin: 10px;
  width: -webkit-fill-available;
  box-sizing: border-box;
  text-align: center;
  line-height: 32px;
}
.title {
  font-size: 24px;
  font-weight: 700;
  margin: 10px;
}
.rst {
  border: 1px solid red;
  background-color: white;
  color: red;
  cursor: pointer;
}
.btn {
  border: 1px solid blue;
  background-color: blue;
  color: white;
  cursor: pointer;
}

